From: Xiaolong Huang butterflyhuangxx@gmail.com
commit da2311a6385c3b499da2ed5d9be59ce331fa93e9 upstream.
Uninitialized Kernel memory can leak to USB devices.
Fix this by using kzalloc() instead of kmalloc().
Signed-off-by: Xiaolong Huang butterflyhuangxx@gmail.com Fixes: 7259124eac7d ("can: kvaser_usb: Split driver into kvaser_usb_core.c and kvaser_usb_leaf.c") Cc: linux-stable stable@vger.kernel.org # >= v4.19 Signed-off-by: Marc Kleine-Budde mkl@pengutronix.de [bwh: Backported to 4.9: adjust filename, context] Signed-off-by: Ben Hutchings ben@decadent.org.uk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/net/can/usb/kvaser_usb.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/net/can/usb/kvaser_usb.c +++ b/drivers/net/can/usb/kvaser_usb.c @@ -787,7 +787,7 @@ static int kvaser_usb_simple_msg_async(s return -ENOMEM; }
- buf = kmalloc(sizeof(struct kvaser_msg), GFP_ATOMIC); + buf = kzalloc(sizeof(struct kvaser_msg), GFP_ATOMIC); if (!buf) { usb_free_urb(urb); return -ENOMEM; @@ -1457,7 +1457,7 @@ static int kvaser_usb_set_opt_mode(const struct kvaser_msg *msg; int rc;
- msg = kmalloc(sizeof(*msg), GFP_KERNEL); + msg = kzalloc(sizeof(*msg), GFP_KERNEL); if (!msg) return -ENOMEM;
@@ -1590,7 +1590,7 @@ static int kvaser_usb_flush_queue(struct struct kvaser_msg *msg; int rc;
- msg = kmalloc(sizeof(*msg), GFP_KERNEL); + msg = kzalloc(sizeof(*msg), GFP_KERNEL); if (!msg) return -ENOMEM;